Question

What does EPR say about measurement (of a particle) on Earth having an impact (on a particle) on the moon?

a) No impact due to the distance
b) Instantaneous impact, violating the speed of light
c) Gradual impact over time
d) Impact depends on the particle's spin

Answer 1

The measurement of one particle instantaneously affects the state of another particle, regardless of the distance between them, as shown by the EPR paradox in quantum mechanics.

Step-by-step explanation:

The EPR (Einstein-Podolsky-Rosen) paradox is a thought experiment in quantum mechanics that explores the relationship between two entangled particles. According to quantum theory, the measurement of one particle instantaneously affects the state of the other regardless of the distance separating them.

This phenomenon is known as quantum entanglement. Quantum entanglement does not violate the speed of light, as it involves a non-local connection between the particles. When a measurement is made on one particle on Earth the state of the other particle on the moon can be determined simultaneously. However, this does not allow for any form of communication or information transfer faster than the speed of light.Therefore the correct answer to the question is b) Instantaneous impact violating the speed of light.